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24.4 Estimates are cross classified by State or Territory and industry.
24.5 Estimates are compiled according to the concepts and definitions outlined in Chapter 12.
24.6 The scope of the Industrial Disputes Collection is restricted to employing businesses at which an industrial dispute has occurred. For this collection, industrial disputes are defined as work stoppages of ten working days or more. Ten working days are equivalent to the amount of ordinary time worked by ten people in one day, regardless of the length of the stoppage, e.g. 3,000 workers on strike for 2 hours would be counted as 750 working days lost (assuming they work an 8 hour day).
24.7 Effects on other establishments not directly involved in the dispute, such as stand-downs because of lack of materials, disruption of transport services, power cuts, etc. are not included in the scope of this collection.
24.8 Included are the following types of industrial disputes:
24.9 Excluded are:
24.10 In addition, if all of the employees involved in an industrial dispute resign, that dispute is considered to be resolved. The dispute is no longer considered in scope of the collection from the date of the employment termination.
24.11 Detailed information about each identified dispute is obtained using a mail-out/mail-back collection methodology. Information is generally from employers and, in some cases, unions.
24.12 The collection reference period is the previous calendar month.
24.13 Telephone follow-up and some written reminders of all outstanding returns is undertaken after the due date. The response rate is 100% in most months.
24.14 The statistical units for the collection are businesses involved in industrial disputes.
24.15 The frame is compiled monthly and comprises all organisations whose employees were known to have been involved in disputes, as defined, in the previous calendar month. All organisations on the frame are selected in the survey.
24.16 A number of sources are used to identify industrial disputes, including: Media Monitors; Reuters Business Service; union magazines; Australian and State Industrial Relations Commission (IRC) Hearings Lists; and reports from government authorities. Organisations identified through these sources are contacted by telephone to determine whether the dispute is in scope of the collection. In addition, lists of organisations regularly involved in disputes are maintained. Organisations on these lists are contacted by mail each month to determine whether they have been involved with disputes that are in scope of the collection.
24.17 It is not always possible to identify all the businesses involved in a dispute, particularly in large disputes. When this occurs, other bodies which might be able to provide the information, such as unions and employer organisations, are contacted. Some small disputes (particularly in small businesses) may also not be identified because of the lack of media attention given to them.
24.18 Estimates are calculated by summing the survey responses. As the collection is a census, no weighting is required.
24.19 Generally, there is no imputation for non-response. However, for large general strikes, clerical imputation methods are used, and as many sources are referenced as possible, such as unions, employer organisations, press and employers.
RELIABILITY OF THE ESTIMATES
24.20 Estimates from the survey are subject to non-sampling error.
DATA COMPARABILITY OVER TIME
24.21 In order to provide a high degree of consistency and comparability over time, changes to survey methods, survey concepts, data item definitions, frequency of collection, and time series analysis methods, are made as infrequently as possible. Significant changes have included:
24.22 For further details contact the Assistant Director, Labour Employer Surveys Section, on Perth (08) 9360 5245.